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File Size Estimator

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About File Size Estimator

Estimate video file sizes based on duration, resolution, and codec. Compare sizes across quality presets for storage and bandwidth planning.

How It Works

Enter duration and specifications to get file size estimates across multiple codecs and quality presets.

Frequently Asked Questions

How big is a 1-hour 1080p video?
H.264 high quality: ~5-7 GB. H.265: ~3-4 GB. VP9: ~2.5-3.5 GB. Low-quality streaming: 1-2 GB.
Why do different codecs produce different sizes?
Newer codecs use more advanced compression. AV1 can match H.264 quality at roughly 50% the file size.